The Coupling,tube, cataloged under National Stock Number 4730-01-312-9223, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Swagelok Co. Government technical data includes 12 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-312-9223 |
| Primary Part Number | SS-810-6 |
| Item Name | Coupling,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Swagelok Co |
| Status | ACTIVE |
| Furnished Items and Quantity | 2 TUBE COUPLING NUT |
| Connection Style | FLARELESS (TUBE) ALL ENDS |
| Nominal Overall Length | 2.016 INCHES IN |
| Connection Type | THREADED EXTERNAL TUBE ALL ENDS |
| Style Designator | INVERTED FLARE W/ CENTER WRENCHING FACILITY |
| Nominal Outside Diameter Tube Accommodated | 0.500 INCHES ALL ENDS IN |
| Operating Pressure | 3600.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Nominal Thread Size | 0.750 INCHES ALL ENDS IN |
| Seat Angle | 12.0 DEGREES ALL ENDS |
| Thread Class | 2A ALL ENDS A |
| Material | STEEL COMP 316 OVERALL |
| Thread Series Designator | UNF ALL ENDS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 8772820-5 | Libby Power Systems, Llc (USA) |
| SS-810-6 PRIMARY | Swagelok Co (USA) |
| SS-810-6 | South London Valve & Fitting Company Ltd T/a Swagelok London (GBR) |
| Reference | Meaning |
|---|---|
| 8772820 | 7/1 Vendor item drawing reference Libby Power Systems, Llc |
NSN 4730-01-312-9223 is a Coupling,tube, manufactured by Swagelok Co, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-312-9223 has 3 manufacturer part numbers on file: 8772820-5 (Libby Power Systems, Llc), SS-810-6 (Swagelok Co), SS-810-6 (South London Valve & Fitting Company Ltd T/a Swagelok London).
1 possible match (shared part number, not a government interchangeability claim): 4730-01-313-7279. Verify interchangeability with system specifications before substitution.
Key specifications for SS-810-6: Furnished Items and Quantity: 2 TUBE COUPLING NUT; Connection Style: FLARELESS (TUBE) ALL ENDS; Nominal Overall Length: 2.016 INCHES IN; Connection Type: THREADED EXTERNAL TUBE ALL ENDS. 12 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.